Description : Which one of the following are analogous structures? (a) Wings of bat and wings of pigeon (b) Gills of prawn and lungs of man (c) Thorns of Bougainvillea and tendrils of Cucurbita (d) Flippers of dolphin and legs of horse
Last Answer : (a) Wings of bat and wings of pigeon
Description : Which one of the following pairs of items correctly belongs to the category of organs mentioned against it? (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs ( ... Cucurbita - analogous organs (d) Nictitating membrane and blind spot in human eye - vestigial organs
Last Answer : (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs
Description : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, Aquatic arthropods, Flatworm, Molluscs, Bir
Last Answer : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, ... A. Six B. Four C. Three D. Five
Description : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, Nereis, Scoliodon.
Last Answer : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, ... A. One B. Two C. Three D. Four
Description : Illustrate the following with the help of suitable diagrams. a) Regeneration in Planaria b) Budding in Hydra c) Spore formation in Rhizopus
Last Answer : Illustrate the following with the help of suitable diagrams. a) Regeneration in Planaria b) Budding in Hydra c) Spore formation in Rhizopus
Description : .Which one of the following animals possesses nerve cells but no nerves? (a) Hydra (b) Tapeworm (c) Earthworm (d) Frog’s tadpole
Last Answer : (a) Hydra
Description : In which one of the following organisms its excretory organs are correctly stated? (a) Humans - Kidneys, sebaceous glands and tear glands (b) Earthworm - Pharyngeal, integumentary and septal ... Cockroach - Malpighian tubules and enteric caeca (d) Frog - Kidneys, skin and buccal epithelium
Last Answer : (b) Earthworm – Pharyngeal, integumentary and septal nephridia
Description : In which of the following animals, is open circulatory system found? (1) Prawn (2) Earthworm (3) Toad (4) Man
Last Answer : (1) Prawn Explanation: The open circulatory system is a system in which fluid in a cavity called the hernocoel bathes the organs directly with oxygen and nutrients and there is no ... this combined fluid is called hemolyrnph or hemolymph. Arthropods and mollusks have an open circulatory system.
Description : Which group of animals belong to the same phylum? (a) Prawn, Scorpion, Locusta (b) Sponge, Sea anemone, Starfish (c) Malarial parasite, Amoeba, Mosquito (d) Earthworm, Pinworm, Tapeworm
Last Answer : (a) Prawn, Scorpion, Locusta
Last Answer : Prawn
Description : Which of the following creatures has no blood but respires? (a) Cockroach (b) Earthworm (c) Fish (d) Hydra
Last Answer : Ans:(d)
Description : Which of the following has no blood, but respires? (1) Fish (2) Earthworm (3) Hydra (4) Cockroach
Last Answer : (3) Hydra
Description : The example of hermaphrodite animal in which cross fertilization occurs is - (1) Hydra (2) Ascaris (3) Earthworm (4) Silkworm
Last Answer : (1) Hydra Explanation: Cross fertilization occurs in Hydra. The spermatozoa released from the testis of one Hydra swim about in water with their tails and finally come into contact with the ovum ... penetrates the ovum and fertilizes it. This results in the formation of a zygote which is diploid.
Description : Which of the following is a monogenetic parasite? (1) Hydra (2) Fasciola (3) Ascaris (4) Earthworm
Last Answer : (3) Ascaris Explanation: Ascaris is a monogenetic parasite as it completes it life cycle in a single host, i.e., man.
Description : In which of the following animals nerve cell is present but brain is absent? (a) Sponge (b) Earthworm (c) Cockroach (d) Hydra
Last Answer : (d) Hydra
Description : Which of the following has no blood, but respires ? (1) Fish (2) Earthworm (3) Hydra (4) Cockroach
Last Answer : Hydra
Description : Which of the following is a monogenetic parasite ? (1) Hydra (2) Fasciola (3) Ascaris (4) Earthworm
Last Answer : Ascaris
Description : The example of hermaphrodite animal in which cross fertilisation occurs is (1) Hydra (2) Ascaris (3) Earthworm (4) Silkworm
Description : How do most insects respire? (1) Through skin (2) Through gills (3) By tracheal system (4) By lungs
Last Answer : (3) By tracheal system Explanation: Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.
Description : Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the ... in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.
Last Answer : (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals.
Description : Most insects have wings. Which is the other animal phylum that contains creatures with analogous organs?
Last Answer : Besides the phylum Arthropoda another animal phylum with flying creatures is the chordate phylum, birds and chiropterans mammals (bats) have wings. In the past some reptiles that possibly originated ... wings too. There are also amphibians and fishes that jump high exploring the aerial environment.
Description : Wings of birds and insects are – (1) Xenologous (2) Homologous (3) Paralogous (4) Analogous
Last Answer : (4) Analogous Explanation: Wings of birds and insects are analogous struetures used for flight in both types of organisms. But, they have no common ancestral origin at the beginning of their evolutionary development. They show similar function but show no similar structural relationship.
Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.
Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side
Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side.
Description : Asthma may be attributed to (a) inflammation of the trachea (b) accumulation of fluid in the lungs (c) bacterial infection of the lungs (d) allergic reaction of the mast cells in the lungs.
Last Answer : (d) allergic reaction of the mast cells in the lungs.
Description : Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta americana as it enters the animal body? (a) Spiracle in ... prothorax, tracheoles, trachea, oxygen diffuses into cells (d) Hypopharynx, mouth, pharynx, trachea, tissues
Last Answer : (a) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
Description : Explain ' Characteristic Cells of Nidoblast Hydra ' ?
Last Answer : Hydra nidaria. The outer layer of the hydra is called the ectoderm and the inner layer is called the endoderm. At the ectoderm layer there is a characteristic cell called nidoblast. These cells ... such as hunting , self-defense , and movement. This is why "nidoblast hydra characteristic cells".
Description : What features did the cells you observed have in common How were they different - Bacillus Megaterium - Mixed Diatoms - Anaboena - Micrococcus Luteus - Hydra - Saccharomyces - Paramecium?
Last Answer : Feel Free to Answer
Description : Which of the following animals have scattered cells with cell - tissue grade organisation? (a) Sponge (b) Hydra (c) Liver fluke (d) Ascaris
Last Answer : (b) Hydra
Description : Which of these animals has the characteristic nephridia ?
Last Answer : Answer : The nephridia is a cylindrical and fragmented excretory organ.
Description : Which of the following flushes out body wastes with the help of an organ called nephridia ?
Last Answer : Answer : The earthworm removes body wastes with the help of an organ called nephridia.
Description : Which is the excretory organ nephridia ?
Last Answer : Excretory organ nephridia is a leech.
Last Answer : Animals of the genus Annelida have excretory organs called nephridia.
Description : Solenocytes and nephridia are respectively found in
Last Answer : Solenocytes and nephridia are respectively found in A. Platyhelmenth and Annelids B. Annelids ... Cenidaria and Mollusac D. Mollusca and Echinodermata
Description : The septal and pharyngeal nephridia open into alimentary canal and are of enteronephric type. It is an adaptation for
Last Answer : The septal and pharyngeal nephridia open into alimentary canal and are of enteronephric type. It is ... of temperature D. Regulation of amino acids .
Description : The basic functional unit of human kidney is (a) nephridia (b) Henle’s loop (c) nephron (d) pyramid.
Last Answer : (c) nephron
Description : Primary function of enteronephric nephridia of Pheretima is (a) osmoregulation (b) excretion of nitrogenous wastes (c) respiration (d) locomotion.
Last Answer : (a) osmoregulation
Description : Planaria possesses high capacity of
Last Answer : Planaria possesses high capacity of A. metamorphosis B. regeneration C. alternation of generation D. bioluminescence
Description : Select the correct option Assertion Q. due to fragmentation in Planaria, each part develops the remaining body parts and becomes a complete animal Rea
Last Answer : Select the correct option Assertion Q. due to fragmentation in Planaria, each part develops the remaining body ... D. Q is correct but R is wrong.
Description : Onchosphere occurs in (a) Ascaris (b) Fasciola (c) Taenia (d) Planaria.
Last Answer : (c) Taenia
Description : Which one of the following is a matching set of a phylum and its three examples? (a) Porifera - Spongilla, Euplectella, Pennatula (b) Cnidaria - Bonellia, Physalia, Aurelia (c) Platyhelminthes - Planaria, Schistosoma, Enterobius (d) Mollusca - Loligo, Teredo, Octopus
Last Answer : (d) Mollusca - Loligo, Teredo, Octopus
Description : Planaria possesses high capacity of (a) metamorphosis (b) regeneration (c) alternation of generation (d) bioluminescence.
Last Answer : (b) regeneration
Description : Match the following genera with their respective phylum. (1) Ophiura (i) Mollusca (2) Physalia (ii) Platyhelminthes (3) Pinctada (iii)Echinodermata (4) Planaria (iv) Coelenterata (a) (1)-(iv), (2)-(i), (3)-(iii), (4)-(ii) (b) (1)-( ... , (3)-(iv), (4)-(ii) (d) (1)-(iii), (2)-(iv), (3)-(ii), (4)-(i)
Last Answer : (b) (1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)
Description : Example of a digenetic parasite a) Entamoeba b) Enterobium c) Planaria d) schistosoma
Last Answer : d) schistosoma
Description : Liver rot is caused by a) Ascaris b) Fasciola c) Planaria d) Bipalium
Last Answer : b) Fasciola
Description : What is the meaning of the word Prawn ?
Last Answer : Bagda shrimp
Description : Excretory organ in prawn is
Last Answer : Excretory organ in prawn is A. Green glad B. Malpighian tubules C. Kidney D. Nephridia
Description : Which one of the following features is common in silver fish,scorpion, dragonfly and prawn?
Last Answer : Which one of the following features is common in silver fish,scorpion, dragonfly and ... appendges and chitinous exoskeleton D. Caphalothorax involves